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प्रश्न
Tick (√ ) the most appropriate answer.
Galvanising is the process of coating iron with a layer of molten :
विकल्प
zinc
tin
copper
silver
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उत्तर
zinc
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संबंधित प्रश्न
State at least two ways of prevent rusting.
What happens when Sodium burns in oxygen ? Also give the balanced chemical equation for the reaction.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
To prevent rusting, the underside of the ships is coated with __________________.
Write fully balanced equation for the following :
MgO + H2O →
State four ways of preventing rusting.
Describe simple experiments to show the presence of -
oxygen and nitrogen component in air using a bell jar
Distinguish between:
Combustion and Respiration
Give the main experimental points only to demonstrate that candle-gains weight on burning.
Name the following:
The pollutant which combines with water vapour to give sulphuric acid – a product of acid rain.
What is meant by burning?
